Shearing machine



March 1928.

A. PARYS SHEARING MACHINE D iled May -26 &

Patented Mar. 20, 1928.

VUMETE s r ANDY rears, or can-lion, 01110.

G V MACHINE.

Application filed May 4, 1926. Serial No. 106,736.

This invention relates to improvements in shearing machines and has forits principal object the provision of a pair of relatively movable armscarryingat their outer ends removable cutting blades, the arms beingprovided with a mounting for the blade by which the latter may beadjusted so as to present a plurality of cutting edges, which arematerially in excess of the number of cutting edges which the cuttingblade pre- 'sents when used in connection'with shearing machines ofordinary construction.

1 The invention consists in providing one of the cutting arms with alongitudinally extending box'or pocket adapted for the reception of asubstantially flat shaped cutting blade, and the other ofsaid arms beingpro.- vided witha depending flange or wall, arranged in registration andin the plane of 4 the pocket in the first named arm, and to which flangethere is secured a' second 91 tting blade, arranged to. occupyanoperative position offset with relation to the working position of thefirst named, blade, the constrnction of said arm enabling the blade tohe turned and reversed, so that each blade will be provided with fourcutting edges, instead of but two edges as heretofore provided.

lVith these and other objects in view, as will appear as the descriptionproceeds, the invention consists in the novel features of construction,combinations of elements and arrangements of parts hereinafter to befully described and pointed out in the appended claims.

In the accompanying drawing: 7

Figure 1 is a side elevation of a pair of shearing arms provided withcutting blades constructed and arranged in accordance with the presentinvention,

Figure 2 is a vertical sectional view in a transverse plane takenthrough the arms of the cutting blades and showing the latter in oneofthelr working positions,

Figure 3 is a similar view disclosing the blade in a'second workingposition,

Figure 4 is a transverse sectional. view disclosing a slightly modifiedform of the invention with the cutting blades thereof in one position ofadjustment, 7

Figure 5 is a similar view showing the cutting blade at the constructionillustrated in Figure 4 in another working position.

In the accompanying drawing the numeral 1 designates the stationary armof a power operated shearing machine of the type used, for example, inthe cuttingand severing of metal. Pivoted to one end of the arm as at 2is a movable arm 3, which 110 is adapted to be oscillated about the axisof the pivot 2 by any'suitable means, (not shown) In transverse crosssectionthe arm 3 is substantially of T-shap'ed form, including anenlarged head 4 and an integral de- 95 pending flange or wall 5.

V This flangeqis' positioned between the transversely spaced wall of thelower arm 1 so as to permitof the plvotal'connection as at 2 and-also toretain the arms 1 and 3 in vertical align- 7 ment throughout allrelative positions of .op-

- erat-ion.

- The wall 6 at-the forward end of the arm 1 defines a socketor slot {7,which extends longitudinally of thelength of. the arm 1.3 n th nte o thelat e -,Th s oc et is adapted to receive a cutting blade 8, which 1s ply f lack forward is P ed centrally with a plurality fopenings 9,

a a g i 'esis i n th' m le op wa 10 termed t a m Ad pt to pass throughthe openings Q and 10 are fas tening devices in the form of bolts 11,which serve to securely retain the cutting blades in rigid yet removablerelationship with the arm 1. Similarly, the upper arm 3 is provided witha cutting blade 12, corresponding in shape and formation to the blade 8.The blade 12 is provided with a plurality of centrally located openings13, arranged to mg ister with similar openings 14 provided in thedepending webor flange 5 of the movable arm 3.

It will be observed that the flange or web 5 is positioned and locatedin the plane of the socket 7 or of the lower cutting blade 8,

whereas the upper cutting blade is secured to one side or the. other ofthe flange 5 and is thus located in an offset plane with respect to thelower cutting blade. arrangement it will be observed that the cuttingedges of the blade are. accurately p0- sitioned so as to act effectivelyfor shearing "purposes on the work positioned between them. The upperarm 3 is provided with 105 laterally arranged shoulders 15, against-which the upper edges of the blade 12 engage, and which shouldersreceive the'thrust imparted to the blades, rather than in'absorbing suchthrust by the fastening ele' 119 By this 1 ments.

' the arm 1.

Through the provision of the construction described it will be observedthat the position of the cut-ting blades may be reversed, at will, so asto present a multiplicity of cutting edges to the work; whereby when oneset of edges isdulled another set may be presented without requiringrepeated grinding of the cutting blades. Thus in Figure 2 the cuttingedges a-a are presented to the work, while by shifting the blade toassume the position shown in Figure2 the cutting edges Z)b may bepresented to the work. Thus, since the fastening elements are located inthe center of the blades, the latter may be reversed so as to presentthe cutting edges 0-0 and dcl.

' In Figures at and 5 provision is made for the employment of cutterblades 16 of previous desigIn-wherein the openings 17 for the reception.of the binding elements 18 are 10- cated adjacent one set of cuttingedges to a greater extent thanthey are to the opposed set of cuttingedges. In order to make use of theseprevious types of blades it-is mere-1y necessary to employ in conjunction therewith-aplurality of fillingblocks 19, which serve to render the-cutting blades reversible andtopermit of their proper retention in connection with the arms 1 and 3.If desired, 'thearm 3 may be provided with a plate 20 to prevent theraising of the work 21 when the shearing operation takes place.

What is claimed is:

1. In a shearing machine,-a pair of relatively movable frames, one ofsaid frames being formed with a longitudinal socket opening to the upperside thereof, a flat cutter bar mounted in said socket, fasteningelements extending transversely through the walls of said socket andthrough said cutter barto reversibly retain the latter in said socket,the other of said frames being formed with 'a depending web arranged inthe place of said socket, a second flat'cutter bar, and fasteningappliances for uniting said last named cutter bar to either of thevertical side walls :of said web, said appliancespassing transverselythrough said Web and the last named cutter bar.

'2. In a shearing machine, a pair of relatively movable frames, one ofsaid frames being. formed with a longitudinal socket opening to theupper side thereof, a flat cutter bar mounted in said socketfasteningelements extending transversely through the walls of said socket andcentrally through said cutter bar to reversibly retain the latter insaidsocket, the other ofsaid frames being formed with a depending Webarranged in the place of said socket,1a second fiat cutter bar, andfastening appliances for uniting saidlast named cutter bar to'either ofthe vertical side walls of said web, said appliances passingtransversely through said web and transversely and centrally through thelast named cutter 'bar. V r I In testimony whereof I aflix my signature.

I ANDY PARYS.

